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Keywords:

  • electrochemistry;
  • metal oxides;
  • nanoparticles;
  • supercapacitors
Thumbnail image of graphical abstract

Impressive energy storage and delivery: A simple, cost-effective, and potentially scalable technique is described for fabricating support- and additive-free NiO/Ni nanocomposite electrodes (see picture) for electrochemical supercapacitors. Maximum performances of energy storage and delivery were simultaneously achieved by developing a slow-charging and fast-discharging procedure.